Design method of a new Ka-band mobile satellite antenna

Abstract

The application provides a mobile satellite antenna device, which is characterized in that a rotating table is arranged on a base, an azimuth assembly is arranged on the rotating table to realize rotation, a pitching assembly is arranged on the azimuth assembly to realize pitching movement, a main reflecting surface is arranged on the pitching assembly to reflect signals to a feed source at a central position of the main reflecting surface, so that the signals are received, and the pitching assembly comprises a pitching transmission wheel, which is directly arranged on a side of the main reflecting surface away from the feed source, so that the height of the mobile satellite antenna device can be reduced, and miniaturization and compactness are further realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of satellite communication antenna technology, in particular to a mobile satellite antenna device. BACKGROUND

[0002] With the rapid development of digital technology, network technology, mobile communication technology, modern communication technology, and the increasingly strong demand of users for instantaneity and clarity of diversified media information, the requirement for information transmission bandwidth is also increasing. With the development of satellite communication industry, the existing C-band satellite resources cannot meet the growing demand for satellite communication, and the development and utilization of Ku and Ka bands are imperative. One common use of antennas is on vehicles, which can be placed in various positions on the vehicle body to provide communication between the vehicle and other radio wave receiving entities, including ground-to-air, air-to-ground, air-to-air and ground-to-ground.

[0003] However, how to miniaturize the vehicle-mounted antenna while ensuring its signal strength is a big problem that needs to be solved at present. SUMMARY

[0004] Therefore, the embodiments of the present application aim to provide a mobile satellite antenna device, which sets a rotating table on the base, sets an azimuth assembly on the rotating table to realize rotation, sets an elevation assembly on the azimuth assembly to realize elevation movement, sets a main reflector on the elevation assembly for reflecting signals to the feed source at the center position of the main reflector, thereby realizing signal reception, and the elevation assembly includes an elevation transmission wheel, which is directly arranged on the side of the main reflector away from the feed source, so as to reduce the height of the mobile satellite antenna device and further realize miniaturization and compactness.

[0005] The mobile satellite antenna device provided by an embodiment of the present application comprises a base, a rotating table arranged on the base, an azimuth assembly arranged on the rotating table, the azimuth assembly being movably connected with the rotating table and rotating relative to the rotating table, an elevation assembly arranged on the azimuth assembly, the elevation assembly being movably connected with the azimuth assembly and moving in an elevation direction relative to the azimuth assembly, a main reflector arranged on the elevation assembly, and a feed source arranged at the center position of the main reflector, wherein the elevation assembly comprises an elevation transmission wheel, and the elevation transmission wheel is arranged on the side of the main reflector away from the feed source.

[0006] In an embodiment, the elevation transmission wheel is arranged at the two end portions corresponding to the maximum diameter of the main reflector.

[0007] In an embodiment, the azimuth assembly comprises a first gear and a first motor, and a second gear is arranged on the rotating table, and the first gear is engaged with the second gear.

[0008] In an embodiment, the rotation shaft of the elevation transmission wheel is connected with the main reflecting surface, and the elevation transmission wheel is movably connected with the azimuth assembly through a support frame.

[0009] In an embodiment, the feed source comprises a variable angle structure.

[0010] In an embodiment, a sub reflecting surface is arranged on the main reflecting surface.

[0011] In an embodiment, the sub reflecting surface is mounted on the feed source through a support frame.

[0012] In an embodiment, the sub reflecting surface comprises a zoom structure.

[0013] The mobile satellite antenna device provided by the embodiment of the present application comprises a base, a rotating table arranged on the base, an azimuth assembly arranged on the rotating table to realize rotation, an elevation assembly arranged on the azimuth assembly to realize elevation movement, and a main reflecting surface arranged on the elevation assembly to reflect signals to a feed source at a central position of the main reflecting surface, so as to realize signal receiving. The elevation assembly comprises an elevation transmission wheel, and the elevation transmission wheel is directly arranged on a side of the main reflecting surface away from the feed source, so as to reduce the height of the mobile satellite antenna device and further realize miniaturization and compactness. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 shows a structural schematic diagram of a mobile satellite antenna device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0016] In addition, in the example embodiments, if an embodiment is described exemplarily, the same reference signs represent the same components with the same structure or the same steps of the same method in other example embodiments, if the structure or method different from the described embodiment is described in other example embodiments.

[0017] In the whole specification and claims, when one component is described as being "connected" to another component, the one component can be "directly connected" to the other component, or "electrically connected" to the other component through a third component. In addition, unless explicitly described otherwise, the term "comprise" and its corresponding terms should be understood as comprising the described components only, and should not be understood as excluding any other components.

[0018] Figure 1 Fig. 1 is a structural schematic diagram of a mobile satellite antenna device according to an embodiment of the present application. Figure 1 As shown in the figure, the mobile satellite antenna device comprises a base 1, a rotating table 2 arranged on the base 1, an azimuth assembly 3 arranged on the rotating table 2, an elevation assembly 4 arranged on the azimuth assembly 3, a main reflector 5 arranged on the elevation assembly 4, and a feed source 6 arranged at the center of the main reflector 5. The azimuth assembly 3 is movably connected to the rotating table 2, and the azimuth assembly 3 rotates relative to the rotating table 2. The elevation assembly 4 is movably connected to the azimuth assembly 3, and the elevation assembly 4 moves in the elevation direction relative to the azimuth assembly 3. The elevation assembly 4 comprises an elevation transmission wheel 40 arranged on the side of the main reflector 5 away from the feed source 6. The rotation of the azimuth assembly 3 relative to the rotating table 2 drives the elevation assembly 4 on the azimuth assembly 3, the main reflector 5 on the elevation assembly 4, and the feed source 6 to rotate. The elevation movement of the elevation assembly 4 relative to the azimuth assembly 3 drives the main reflector 5 and the feed source 6 to move in the elevation direction, thereby realizing the omnidirectional movement of the main reflector 5 and the feed source 6 to obtain satellite communication signals. The elevation transmission wheel 40 is arranged on the side of the main reflector 5, which directly connects the main reflector 5 and the elevation assembly 4 to realize the elevation movement, thereby saving the space of the connecting member between the main reflector 5 and the elevation assembly 4, reducing the height of the entire antenna device, and facilitating the miniaturization and compactness of the antenna device. In an embodiment, high-precision fiber-optic inertial navigation is used to position and orient the vehicle or helicopter before starting. The drift characteristics of the high-precision fiber-optic inertial navigation are very good, and the pointing accuracy almost does not change over a long period of time. The small drift characteristics of the fiber-optic inertial navigation can solve the problem that the traditional tracking methods such as step tracking, conical scanning, and single-pulse tracking cannot be used due to the blocking of satellite signals.

[0019] The mobile satellite antenna device according to the embodiment of the present application comprises a base, a rotating table arranged on the base, an azimuth assembly arranged on the rotating table to realize rotation, an elevation assembly arranged on the azimuth assembly to realize elevation movement, and a main reflector arranged on the elevation assembly to reflect signals to a feed source at the center of the main reflector, thereby realizing signal reception. The elevation assembly comprises an elevation transmission wheel directly arranged on the side of the main reflector away from the feed source, thereby reducing the height of the mobile satellite antenna device and further realizing miniaturization and compactness.

[0020] In an embodiment, the elevation transmission wheel 40 is arranged at the two side ends corresponding to the maximum diameter of the main reflector 5. Arranging the elevation transmission wheel 40 at the two side ends corresponding to the maximum diameter of the main reflector 5 can minimize the elevation profile of the main reflector 5, thereby further reducing the volume of the antenna device.

[0021] In one embodiment, the orientation component 3 includes a first gear and a first motor, and a second gear is disposed on the rotary table 2, with the first gear meshing with the second gear. By providing the first gear and the second gear, a rotational connection between the rotary table 2 and the orientation component 3 is achieved, and the precise positioning of the gears ensures the accuracy of the rotation. In one embodiment, the first motor can be a servo motor, thereby improving the accuracy of the rotation.

[0022] In one embodiment, the pitch drive wheel 40 is connected to the main reflector 5 via its shaft, and the pitch drive wheel 40 is movably connected to the azimuth assembly 3 via a support frame. By connecting the pitch drive wheel 40 and the azimuth assembly 3 via the support frame, the pitch movement of the main reflector 5 can be achieved, and the height of the antenna device can be minimized.

[0023] In one embodiment, the feed 6 includes a variable angle structure. By configuring the feed 6 as a variable angle structure, efficiency and bandwidth can be improved.

[0024] In one embodiment, such as Figure 1 As shown, a sub-reflector 7 is provided on the main reflector 5. By providing the sub-reflector 7, the signal can be focused and emitted after passing through the feed 6 and the sub-reflector 7 to the main reflector 5, thereby improving the intensity of the emitted signal.

[0025] In one embodiment, the sub-reflector 7 is mounted on the feed 6 via a bracket. By mounting the sub-reflector 7 directly on the feed 6, the size of the antenna device can be further reduced.

[0026] In one embodiment, the sub-reflector 7 includes a ring-focus structure. By configuring the sub-reflector 7 as a ring-focus structure, it is possible to achieve a small transmitted signal with high quality.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mobile satellite antenna device, characterized by The application relates to an antenna device, which comprises: a base; a rotating table arranged on the base; an azimuth assembly arranged on the rotating table, the azimuth assembly being movably connected with the rotating table, and the azimuth assembly being rotatable relative to the rotating table; an elevation assembly arranged on the azimuth assembly, the elevation assembly being movably connected with the azimuth assembly, and the elevation assembly being movable in an elevation direction relative to the azimuth assembly; a main reflecting surface arranged on the elevation assembly; and a feed arranged at a central position of the main reflecting surface; wherein the elevation assembly comprises an elevation transmission wheel arranged on a side of the main reflecting surface away from the feed; the elevation transmission wheel is arranged at two side ends corresponding to a maximum diameter of the main reflecting surface, and the elevation transmission wheel is arranged at both upper and lower side ends of the main reflecting surface; the elevation profile of the main reflecting surface is as small as possible, so that the volume of the antenna device is reduced; the rotating shaft of the elevation transmission wheel is connected with the main reflecting surface, and the elevation transmission wheel is movably connected with the azimuth assembly through a support frame, so that the elevation movement of the main reflecting surface is realized while the height of the antenna device is reduced. The azimuth assembly comprises a first gear and a first motor, and a second gear is arranged on the rotating table, and the first gear is engaged with the second gear.

2. The antenna device of claim 1, wherein The feed comprises a variable-angle structure.

3. The antenna device of claim 1, wherein A sub-reflection surface is arranged on the main reflecting surface.

4. The antenna device of claim 1, wherein The sub-reflection surface is mounted on the feed through a support.

5. The antenna device of claim 4, wherein, The sub-reflection surface comprises a zoom structure.

6. The antenna device of claim 4, wherein, The first motor is a servo motor.

7. The antenna device of claim 2, wherein, ​

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